western part; the west (of a region)
General term for the western part of a country, city, or area. Often used in geographical names and descriptions.
この町の西部には大きな公園がある。
There is a large park in the western part of this town.
台風は日本の西部を通過した。
The typhoon passed through western Japan.
Specifically refers to the western region of the United States, often in historical or cultural contexts.
彼はアメリカ西部の歴史に詳しい。
He is knowledgeable about the history of the American West.